From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Colin Leroy <colin@colino.net>
Cc: Linux Kernel list <linux-kernel@vger.kernel.org>,
"David S.Miller" <davem@davemloft.net>
Subject: Re: Netconsole & sungem: hang when link down
Date: Wed, 06 Oct 2004 19:08:59 +1000 [thread overview]
Message-ID: <1097053738.16741.58.camel@gaston> (raw)
In-Reply-To: <20041006104251.29dcd38c@pirandello>
On Wed, 2004-10-06 at 18:42, Colin Leroy wrote:
> > Not sure, I suppose the driver is doing printk's with spinlocks held
> > from the autoneg stuff and there is a spinlock deadlock happening ...
>
> Thanks. I'll look into this. If I'm not mistaken, I've got no way of
> catching it easily, do I ? CONFIG_DEBUG_SPINLOCK's help seems to say
> that I need NMI watchdog in order to catch deadlocks, which is only
> available on x86(_64).
Hrm... we have some sort of spinlock debugging, at least on ppc64...
BTW, did you have SMP or PREEMPT ? If none of these, then you should
not see any spin deadlock...
The solution is to look at the code though and find what's wrong :)
Ben.
next prev parent reply other threads:[~2004-10-06 9:15 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20041006083954.0abefe57@pirandello>
2004-10-06 8:16 ` Netconsole & sungem: hang when link down Benjamin Herrenschmidt
2004-10-06 8:42 ` Colin Leroy
2004-10-06 9:08 ` Benjamin Herrenschmidt [this message]
2004-10-06 9:35 ` Colin Leroy
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